Method for operating a hob, and hob

A method for operating a hob for maintaining a state at a cooking point of the hob with a cooking vessel on said cooking point, wherein said state exists at the time of activation of an operation for maintaining, the method comprising:

• placing said cooking vessel onto said cooking point of said hob and being heated by said cooking point or by an inductive heating device of said cooking point according to requirements;
• detecting a change in temperature of said cooking vessel as a change in state;
• detecting a heating process of said cooking vessel and evaluation of supplied power or a temperature of said cooking vessel or a profile thereof with respect to time;
• triggering of a maintaining function by an operator for maintaining said state, which is indicated at said time, at said cooking point with said cooking vessel placed on it;
• and
• dividing a current state at said cooking point firstly into a process at a boiling point of water and secondly into a process which is different therefrom or into a process which takes place at a different temperature without a phase transition of water,
• wherein, in a case of a decision in favor of said process at said boiling point of water, said power supply at said point is then kept largely constant or a customary power supply for continued boiling is set, and
• wherein, in a case of a decision in favor of said process not at said boiling point of water, said process is regulated at a constant temperature of said cooking vessel by adapting said power supply.